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10 cards from this deck
Reverses/undoes the original function
xxx
Must be one-to-one relation
Invertible
Interchange xxx and yyy
Make yyy subject, express in function notation
y=xy = xy=x
f−1(x)f^{-1}(x)f−1(x) (not an exponent)
1f(x)\frac{1}{f(x)}f(x)1
Not one-to-one (fails horizontal line test)
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